Question: Which are the YouTube Play Buttons that are conferred by YouTube?
Paraphrase: Which are the YouTube Play Buttons that are conferred by YouTube?
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P1027 wd:Q866 . ?sbj wdt:P31 wd:Q18157145 } 
Answer: Silver Play Button, Gold Play Button, Diamond Play Button, Custom Play Button, Red Diamond Creator Award